3-Hydroxy-5-((4aS,6R,8aR)-6-hydroxy-2,5,5,8a-tetramethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydro-naphthalen-1-yl)-3-methyl-pentanoic acid methyl ester 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
以80%的产率得到5-((3R,4aS,6R,8aR)-3,6-Dihydroxy-2,5,5,8a-tetramethyl-3,4,4a,5,6,7,8,8a-octahydro-naphthalen-1-yl)-3-hydroxy-3-methyl-pentanoic acid methyl ester